35 votes
Accepted

Is the little reflection a ghost?

The green streak in "Jupiter's reflection" makes it much more likely to be caused by a passing boat (going from left to right given the color):
xenoid's user avatar
  • 21.1k
24 votes
Accepted

Why is there ghosting when using flash on tripod with image stabilization?

Looks like it's related to image stabilization as Tetsujin suggested. Managed to replicate the issue. Switched off the IS and the Ghosting went away. It is a new IS lens (Latest Sigma 105mm macro IS)....
Duncan_w's user avatar
  • 501
23 votes

Why is there ghosting when using flash on tripod with image stabilization?

Sigma's product manual says: Please do not use Optical Stabilization in the following situations. When the lens is mounted on a tripod Bulb (long time exposure) As I understand it, ...
David Richerby's user avatar
14 votes
Accepted

Why do my mobile phone images have a ghostly glow?

The effect you are seeing is usually called "halation" or "bloom", and on the face of it, it seems obviously caused by the lens protector. Take it off, and compare. Is it worth ...
osullic's user avatar
  • 12k
11 votes
Accepted

What is this shadow in my photo?

It is either subject motion or camera motion. 1/80 second is pretty slow for human subjects not making a specific effort to be still. It is also pretty slow to use hand held if you are going to pixel ...
Michael C's user avatar
  • 175k
11 votes

What is causing the "bright spot" artifact in my picture?

This artifact falls under the heading of flare / ghost image. It is caused by internal reflections. The camera lens is a complex array of multiple polished glass lens elements. Some elements are ...
Alan Marcus's user avatar
  • 38.9k
8 votes

Why do my mobile phone images have a ghostly glow?

It's almost certainly the protector and/or smudges on either the protector or the original surface before the protector was applied. Most smudges are caused by skin oil in fingerprints. The oil on the ...
Michael C's user avatar
  • 175k
8 votes

Is the little reflection a ghost?

While the reflection in your picture is probably not Jupiter's (see xenoid's answer), it is totally possible for stars and planets to be reflected off water, either as streaks like here or (if the ...
Ilmari Karonen's user avatar
7 votes
Accepted

What is the cause of a dimmer image of a light source in a photo?

That is most likely the result of an internal reflection between different elements in your lens. Modern coatings can reduce and/or eliminate a lot of internal reflections, but all bets are off when ...
twalberg's user avatar
  • 5,148
6 votes

Why is there a secondary image of a light bulb in my image?

It is a lens flare, a secondary and dimmer image of the bright light bulb caused by a part of the light not making it straight to the sensor but reflecting around inside the lens first.
JohannesD's user avatar
  • 1,786
5 votes
Accepted

What is this green dot near the light in this photo and what's causing it?

Those are reflections of the lights. The most common cause of this is using a filter in front of the lens since its flat surface makes reflection easier to occur and in a more predictable pattern. The ...
Itai's user avatar
  • 103k
4 votes

Why is there ghosting when using flash on tripod with image stabilization?

It is definitely caused by the flash (shot of the exact same scene without flash removed the ghost image). Not necessarily. The difference could have been something else only tangentially related to ...
Michael C's user avatar
  • 175k
3 votes
Accepted

Why do these reflections appear in some photos and how can I stop it from happening?

When light rays coming from a bright source(s) of light (such as the sun or artificial light) directly reach the front element of a camera lens, they can reflect and bounce off different lens elements,...
Alan Marcus's user avatar
  • 38.9k
3 votes

Why is there a secondary image of a light bulb in my image?

Looks like a reflection in the lens. Bright lights often cause spots in other parts of the photo when the light bounces around inside the lens, and in this case the spot is much dimmer so actually ...
Caleb's user avatar
  • 31.7k
3 votes

What could cause this visible artifact which seems to a be a glowing inverse of something outside of the frame overlayed on this photograph?

I agree with @Michael Clark 's answer. I used Google Earth to get a better angle, cropped, rotated 180°, and superimposed. Here's the result:
Rob's user avatar
  • 1,813
3 votes

How much flare should I expect with a Hoya HMC Filter?

What is acceptable is a matter of personal prefernce and where the photo will be used. I personally think that the flare is well within the tolerance of being acceptable. When it comes to needing the ...
Kel's user avatar
  • 129
3 votes

Where is this reflection coming from?

As you know, the camera lens is fabricated using numerous lens elements, each with two polished glass surfaces. Now polished glass reflects away about 5% of the light. This reflected light is lost so ...
Alan Marcus's user avatar
  • 38.9k
3 votes
Accepted

Where is this reflection coming from?

This is a type of lens flare called "ghosting". A UV filter can certainly cause it to be strongly visible, although it can happen without as well. A UV filter can be useful protection if you are in a ...
mattdm's user avatar
  • 143k
3 votes
Accepted

What is causing these red sphere flares?

Yes, the problem you are experiencing is a subclass of general flare and ghosting issues, often called "red dot flare" (see also: What causes lens flare?). The reason for the grid or array ...
scottbb's user avatar
  • 32.5k
3 votes

Is the artifact in this photo caused by lens flare?

The artifact is an inverted and reversed reflection of the bright headlight exactly opposite across the center of the frame (of the original, uncropped image) from the artifact. This is a type of lens ...
Michael C's user avatar
  • 175k
3 votes

Is the artifact in this photo caused by lens flare?

Looks somewhat like flare from the headlight... Same shape, some specular components that may be from the fender...
BobT's user avatar
  • 6,724
3 votes

Is the artifact in this photo caused by lens flare?

Yes, it is the headlight. You can make out the aspheric projector element, the round curvature and whatnot.
J.Hirsch's user avatar
  • 1,057
3 votes

What is the cause of a dimmer image of a light source in a photo?

Modern camera lenses are an array of multiple lenses. Such designs are necessary to mitigate degrading of the image due to aberrations. We are talking about the fact that all lenses suffer from about ...
Alan Marcus's user avatar
  • 38.9k
2 votes

What is causing the "bright spot" artifact in my picture?

Nothing to do with your sensor, these are reflections of some bright light on the individual lenses in you lens. My bet is parasite light from the lamp post under which you were when taking the ...
xenoid's user avatar
  • 21.1k
2 votes
Accepted

Why is there a secondary image of a light bulb in my image?

The job of the camera lens is to project a miniature image of the outside world onto the surface of the image sensor / film. To accomplish, light rays from the scene transverse the lens. These rays ...
Alan Marcus's user avatar
  • 38.9k
2 votes

Which wide angle lens and camera combinations are considered to be particularly resistant to artifacts from street light sources?

In general, lenses with superior anti-reflective coatings will reduce the influence of brighter light sources to create flare and reflections within the frame of an otherwise darker scene. Modern ...
Michael C's user avatar
  • 175k
2 votes

What can cause a horizontally flipped ghost image when using a monochrome line-scan camera?

You may be shooting at or through glass or some other transparent or translucent object. Here is an image I captured shooting through a piece of plastic using a zoom lens set at about 50mm with a ...
xiota's user avatar
  • 27k
2 votes

What can cause a horizontally flipped ghost image when using a monochrome line-scan camera?

Aside from the question of cause, the term for reflections directed toward the source are generally referred to as a retro-reflections or a mirror image from a planar surface. Top-for-bottom images ...
Stan's user avatar
  • 5,511
2 votes

What can cause a horizontally flipped ghost image when using a monochrome line-scan camera?

Assuming standard optics (lens elements that are spherical or pseudo-spherical, rotationally symmetric about the optical axis), and "standard" cameras (no beam-splitting, or mirrors in the optical ...
scottbb's user avatar
  • 32.5k
2 votes

Can someone explain the strange dot on my pictures?

The pictures with the girl is obviously a long shutter and some kind of light doing light painting. It looks like it's one white light and one green that is used. Apart from that, I can't see any ...
Andreas's user avatar
  • 522

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